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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Ashok Kumar Nehra posted an Question
February 02, 2021 • 12:32 pm
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30 points
30 points
- CSIR NET
- Physical Sciences
In an anisotropic crystal, the refractive index is (1) same in all directions (2) different in differcnt directions (3 not well defined (4) infinitely large
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Lekhika![best-answer]()
Ans- option (b) is correct. Isotropic and anisotropic are two important terms widely used to explain the material properties in material science and crystal morphology in basic crystallography. In certain materials like crystals, the orientation of atoms is very important as it affects their physical and mechanical properties. Based on the orientation of atoms, materials are broadly divided into two classes namely: isotropic materials and anisotropic materials. The main difference between isotropic and anisotropic is that the properties of isotropic materials are the same in all directions, whereas in anisotropic materials, the properties are direction dependent. Isotropic materials have a single refractive index. But Anisotropic materials have more than one refractive indices. Anisotropic crystals show birefringence, optical activity, dichroism and dispersion due to different refractive indices.